399184

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:478

約数の個数: 20

約数和(自身を含む): 788020

約数和(自身を除く): 388836

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 409, 488, 818, 976, 1636, 3272, 6544, 24949, 49898, 99796, 199592, 399184]

約数ペア:

[(1, 399184), (2, 199592), (4, 99796), (8, 49898), (16, 24949), (61, 6544), (122, 3272), (244, 1636), (409, 976), (488, 818)]